US3579368A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Simulated slate and method for making the same
Assignee: Metaframe Corp
•
Filing: 1968-07-01
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Granted: 1971-05-18
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Expires: 1988-07-01
Abstract
Abstract SIMULATED SLATE, PARTICULARLY SUITABLE FOR USE AS AN AQUARIUM BOTTOM, MADE BY SUBJECTING BOTH SIDES OF A SHEET OF GLASS TO TREATMENT WHICH WILL RENDER SAID SIDES IN A NONSMOOTH OR DISCONTINUOUS SURFACE, AND THENCE APPLYING AN OPAQUE COATING TO ONE OF THE DISCONTINUOUS SURFACES THEREOF.
Inventors
- 👤 Eugene Bleiweiss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:05
CPC Classifications
C; C03; C03C; C03C17/00; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49885; Y10T428/00; Y10T428/24; Y10T428/24355; Y10T428/24364; Y10T428/31504; Y10T428/31551; Y10T428/31641
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-17 | 1974-11-16 | 1975-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-17 | 1978-11-16 | 1979-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-17 | 1982-11-16 | 1983-05-18 | $7700.00 | Window Closed / Lapsed |